Example usage for java.lang Class getConstructor

Introduction

In this page you can find the example usage for java.lang Class getConstructor.

Prototype

@CallerSensitive
public Constructor<T> getConstructor(Class<?>... parameterTypes)
        throws NoSuchMethodException, SecurityException

Source Link

Document

Returns a Constructor object that reflects the specified public constructor of the class represented by this Class object.

Usage

From source file:Main.java

public static Node applyXslToDocument2(Source xslt, Source doc, URIResolver resolver,
        Properties transformerProperties, HashMap<String, String> params, String transformerClassName)
        throws ClassNotFoundException, IllegalAccessException, InstantiationException, IOException,
        NoSuchMethodException, TransformerConfigurationException, TransformerException {
    TransformerFactory transformerFactory = null;
    if (transformerClassName == null)
        transformerFactory = TransformerFactory.newInstance();
    else {//from w w  w  .  ja  v  a  2s  .c  o m
        Class transformerClass = Class.forName(transformerClassName);
        Constructor defaultConstructor = transformerClass.getConstructor(null);
        transformerFactory = (TransformerFactory) transformerClass.newInstance();
    }

    if (resolver != null)
        transformerFactory.setURIResolver(resolver);

    Transformer transformer = transformerFactory.newTransformer(xslt);
    if (transformerFactory != null)
        transformer.setOutputProperties(transformerProperties);

    if (params != null) {
        for (Map.Entry<String, String> cursor : params.entrySet()) {
            transformer.setParameter(cursor.getKey(), cursor.getValue());
        }
    }

    DOMResult result = new DOMResult();
    transformer.transform(doc, result);

    return (result.getNode());
}

From source file:indexer.Index.java

public static Index createIndex(Class<? extends Indexer> i, String indexDirectory) {
    try {/*from   w  ww .  jav a  2  s .c  o  m*/
        Indexer indexer = i.getConstructor(String.class).newInstance(indexDirectory);
        return getIndex(indexer);
    } catch (InstantiationException | NoSuchMethodException | InvocationTargetException
            | IllegalAccessException e) {
        LogFactory.getLog(Index.class).error("Could not create index.", e);
        return null;
    }
}

From source file:Main.java

public static String applyXslToDocument(Source xslt, Source doc, URIResolver resolver,
        Properties transformerProperties, HashMap<String, String> params, String transformerClassName)
        throws ClassNotFoundException, IllegalAccessException, InstantiationException, IOException,
        NoSuchMethodException, TransformerConfigurationException, TransformerException {
    TransformerFactory transformerFactory = null;
    if (transformerClassName == null)
        transformerFactory = TransformerFactory.newInstance();
    else {/*w  w w . j a  v  a  2s  .co m*/
        Class transformerClass = Class.forName(transformerClassName);
        Constructor defaultConstructor = transformerClass.getConstructor(null);
        transformerFactory = (TransformerFactory) transformerClass.newInstance();
    }

    if (resolver != null)
        transformerFactory.setURIResolver(resolver);

    Transformer transformer = transformerFactory.newTransformer(xslt);
    if (transformerFactory != null)
        transformer.setOutputProperties(transformerProperties);

    if (params != null) {
        for (Map.Entry<String, String> cursor : params.entrySet()) {
            transformer.setParameter(cursor.getKey(), cursor.getValue());
        }
    }

    StringWriter strWriter = new StringWriter();
    StreamResult result = new StreamResult(strWriter);
    transformer.transform(doc, result);

    return (strWriter.toString());
}

From source file:com.ibatis.common.logging.LogFactory.java

/**
 * This method will switch the logging implementation to Log4J if Log4J is available on the classpath. This is useful
 * in situations where you want to use Log4J to log iBATIS activity but commons logging is on the classpath. Note that
 * this method is only effective for log classes obtained after calling this method. If you intend to use this method
 * you should call it before calling any other iBATIS method.
 *
 *///from ww w  .  j av a2  s . co  m
public static synchronized void selectLog4JLogging() {
    try {
        Resources.classForName("org.apache.log4j.Logger");
        Class implClass = Resources.classForName("com.ibatis.common.logging.log4j.Log4jImpl");
        logConstructor = implClass.getConstructor(new Class[] { Class.class });
    } catch (Throwable t) {
    }
}

From source file:Main.java

public static Constructor<?> getConstructor(final Class<?> targetClass, final Class<?>... types) {
    if (targetClass == null || types == null)
        return null;
    try {//from w ww .j a  v a2  s . c o  m
        return targetClass.getConstructor(types);
    } catch (SecurityException e) {
        // ignore
    } catch (NoSuchMethodException e) {
        // ignore
    }
    return null;
}

From source file:Main.java

public static <T> Constructor<T> getConstructor(Class<T> type, Class<?>[] paramTypes)
        throws NoSuchMethodException {
    return type.getConstructor(paramTypes);
}

From source file:com.github.fge.jsonschema.library.validator.CommonValidatorDictionary.java

private static Constructor<? extends KeywordValidator> constructor(final Class<? extends KeywordValidator> c) {
    try {/*w  ww. j a  va  2  s .  com*/
        return c.getConstructor(JsonNode.class);
    } catch (NoSuchMethodException e) {
        throw new RuntimeException("No appropriate constructor", e);
    }
}

From source file:com.ibatis.common.logging.LogFactory.java

/**
 * This method will switch the logging implementation to Java native logging if you are running in JRE 1.4 or above.
 * This is useful in situations where you want to use Java native logging to log iBATIS activity but commons logging
 * or Log4J is on the classpath. Note that this method is only effective for log classes obtained after calling this
 * method. If you intend to use this method you should call it before calling any other iBATIS method.
 *//*from ww  w  .  j a  v a  2s .  c  o m*/
public static synchronized void selectJavaLogging() {
    try {
        Resources.classForName("java.util.logging.Logger");
        Class implClass = Resources.classForName("com.ibatis.common.logging.jdk14.Jdk14LoggingImpl");
        logConstructor = implClass.getConstructor(new Class[] { Class.class });
    } catch (Throwable t) {
    }
}

From source file:Main.java

public static Constructor<?> getConstructor(final Class<?> targetClass, final Class<?>... types) {
    if (targetClass == null || types == null) {
        return null;
    }// ww  w  .  j ava  2 s  .c  om
    try {
        return targetClass.getConstructor(types);
    } catch (final SecurityException | NoSuchMethodException e) {
        // ignore
    }
    return null;
}

From source file:ee.ria.xroad.proxy.clientproxy.HandlerLoader.java

private static Handler instantiate(Class<? extends Handler> handlerClass, HttpClient client) throws Exception {
    try {/*from   w  w  w .  j av  a  2  s  .c  o m*/
        Constructor<? extends Handler> constructor = handlerClass.getConstructor(HttpClient.class);
        return constructor.newInstance(client);
    } catch (NoSuchMethodException e) {
        throw new Exception("Handler must have constructor taking " + "1 parameter (" + HttpClient.class + ")",
                e);
    }
}